gh-wiki-pre-commit

#!/usr/bin/env zsh
#
# Wikify by Mario "Kuroir" Ricalde
#
function wikify() {

  # gnu ls has natural number sorting, useful for sorting 1, 10, 2 into 1, 2, 10
  function gls_or_ls() {
      if hash gls 2>/dev/null; then
          gls -v "$@"
      else
          ls "$@"
      fi
  }

  # Filter some files and directories.
  function continue_if_filtered() {
    if [[ "$@" =~ "images$" ]]; then
      continue
    elif [[ "$@" =~ "(_sidebar|_footer|_header)" ]]; then
      continue
    elif [[ "$@" == "." ]]; then
      continue
    fi
  }

  function directory_depth() {
    if [[ $initial_depth -ne 0 ]]; then
      new_depth=$(echo $@ | grep -o / | wc -l)
      # The minus 1, is for the parent subject directory, we don't count it.
      echo $(($new_depth -  $initial_depth - 1 ))
    else
      echo $@ | grep -o / | wc -l
    fi
  }

  # 4 Spaces per level, this is the markdown standard for lists.
  function calculate_spaces() {
    _spaces=""
    if [[ $@ -gt 0 ]]; then
      i=1
      while [[ $i -le $@ ]]; do
        _spaces="$_spaces    "
        (( i++ ))
      done
    fi
    echo $_spaces
  }

  function depth_and_space() {
    depth=$(directory_depth $@)
    space=$(calculate_spaces $depth)
  }

  function to_parent_subject() {
    echo "$@" | sed -e 's/\/[^\/]*$//'
  }

  function subject_name() {
    echo "$@" | sed -e 's/.*\/\([^\/]*\).md$/\1/'
  }

  function string_to_name_and_id() {
    if [[ "$(file -ib $1)" =~ "directory" ]]; then
      1="$1.md"
    fi
    identifier=$(echo "$1" | sed -e 's/.*\/\([^\/]*\).md$/\1/')
    name=$(echo "$identifier" | sed -e 's/^[0-9\.]*\-//' | sed -e 's/\-/ /g')
  }

  function subject_to_list() {
    string_to_name_and_id $1
    if [[ ! -s $file ]]; then
      flag=" ⚑"
    fi
    echo "${space}0. [[$name|$identifier]]$flag"
  }

  function id_to_string() {
    echo "${@/-/ }"
  }

  function subject_to_header() {
    string_to_name_and_id $1
    echo "\n${space}### [[☰|$identifier]] $(id_to_string $identifier)"
  }

  function recursive_write() {
    if [[ "$reverse_pointer_depth" -eq "0" ]]; then
      pointer_file=$(to_parent_subject $@)
    else
      pointer_file=$@
    fi

    if [[ "$@" != "$subjects" ]]; then
      if [[ "$reverse_pointer_depth" -ne "0" ]]; then
        space=$(calculate_spaces $(($reverse_pointer_depth - 1)))
        echo "$(subject_to_list $file)" >> "$pointer_file.md"
      fi
      (( reverse_pointer_depth++ ))
      recursive_write $(to_parent_subject $@)
      # if current - 1 = home. Then we're at the bottom! 
      if [[ "$(to_parent_subject $@)" == "$subjects" ]]; then
        echo "$(subject_to_list $file)" >> "$@/_sidebar.md"
      fi
    else
      space=$(calculate_spaces $(($reverse_pointer_depth - 2)))
      echo "$(subject_to_list $file)" >> "$subjects/Home.md"
      reverse_pointer_depth=0
    fi
  }

  function parse_subject() {
    depth_and_space $@
    echo "${space}Directory: $@"

    # Directory write
    if [[ "$depth" -eq "0" ]]; then
      echo "$(subject_to_header $@.md)"  >> "$subjects/Home.md"
      echo "$(subject_to_header $@.md)\n---"  > "$@/_sidebar.md"
      echo "$@.md" >> /tmp/wikify.txt
      echo "$@/_sidebar.md" >> /tmp/wikify.txt
    fi

    for file in $(gls_or_ls -l -v $@ | awk '{ print $9 }'); do;
      continue_if_filtered $file
      file="$@/$file"

      if [[ "$(file -ib $file)" =~ "directory" ]]; then
        echo "$file.md" >> /tmp/wikify.txt
        recursive_write $file
        parse_subject $file
      else
        depth_and_space $file
        echo "${space}File: $file"
        echo "$file" >> /tmp/wikify.txt
        recursive_write $file 
      fi
    done
  }

  LANG=C
  subjects=$PWD
  initial_depth=0
  initial_depth=$(directory_depth $subjects)
  reverse_pointer_depth=0
  rm -f /tmp/wikify.txt; touch /tmp/wikify.txt

  # Empty Home.md
  home_file="$subjects/Home.md"
  rm $home_file

  # Cleanup Previous Generated Files.
  for subject in $(find . -type d ! \( -path './.*' -o -path '.' \)); do;
    rm "$subject.md"
  done

  # Begin doing the magic
  for subject in $(gls_or_ls -l -d $PWD/* | egrep '^d' | awk '{ print $9}'); do;
    continue_if_filtered $subject
    parse_subject $subject
  done

  echo "$subjects/Home.md" >> /tmp/wikify.txt
  while read line
  do 
    [ -f $line ] && git add $line
  done < /tmp/wikify.txt

  echo "**Important**: The Tables of Content are generated. Any change will be overridden on the next update.<br>For more information: [GitHub Wikifier](https://github.com/hybridgroup/GitHub-Wikifier)" > "$subjects/_footer.md"
  subjects="$PWD." # hack to restore ps1
}

wikify .